Every once in a while, we get a question asking for a book or other educational reference on a particular topic at a particular level. This is a meta-question that collects all those links together. ...

Where can I find some examples of cross sections calculations in QFT done step-by-step? Those integrals are a little horror. For example - a simple scalar+scalar -> scalar+scalar at the tree level in ...

First time for me here so kindly let me know if I violate the rules - especially if this is a duplicate.
After reading the page how to become a good theoretical phycist, I started a serious revision ...